<template>
   <div>
      <!--面包屑导航区域-->
      <el-breadcrumb separator-class="el-icon-arrow-right">
         <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
         <el-breadcrumb-item>用户管理</el-breadcrumb-item>
         <el-breadcrumb-item>用户列表</el-breadcrumb-item> 
      </el-breadcrumb>

      <!--卡片视图区域-->
      <el-card>
         <!--搜索与添加区域-->
         <el-row :gutter="20">
            <el-col :span="8">
               <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                  <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
               </el-input>
            </el-col>
            <el-col :span="4">
               <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
         </el-row>
         <!--用户列表区域-->
         <el-table :data="userlist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
               <template slot-scope="scope">
                  <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                  </el-switch>
               </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
               <template slot-scope="scope">
                  <!--修改按钮-->
                  <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                  <!--删除按钮-->
                  <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                  <!--分配角色按钮-->
                  <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                     <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                  </el-tooltip>
               </template>
            </el-table-column>
         </el-table>
         <!--分页区域-->
         <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
         </el-pagination>
      </el-card>
      <!--添加用户的对话框-->
      <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
         <!--内容主体区域-->
         <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
               <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
               <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
               <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
               <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
         </el-form>
         <!--底部区域-->
         <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
         </span>
      </el-dialog>
      <!--修改用户的对话框-->
      <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
         <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                  <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                  <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
         </el-form>
         <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
         </span>
      </el-dialog>
      <!--分配角色的对话框-->
      <el-dialog title="提示" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
         <p>当前的用户：{{userInfo.username}}</p>
         <p>当前的角色：{{userInfo.role_name}}</p>
         <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
    
    </el-option>
  </el-select>
         </p>
         <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
         </span>
      </el-dialog>
   </div>
</template>

<script>
export default {
   data () {
      // 验证邮箱都规则
      var checkEmail = (rule, value, cb) => {
         // 验证邮箱都正则表达式
         const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
         if (regEmail.test(value)) {
            // 合法的邮箱
            return cb()
         }
         cb(new Error('请输入合法的邮箱'))
      }

      // 验证手机号的规则
      var checkMobile = (rule, value, cb) => {
         //  验证手机号的正则表达式
         const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
         if (regMobile.test(value)) {
            return cb()
         }
         cb(new Error('请输入合法的手机号'))
      }

      return {
         // 获取用户列表的参数对象
         queryInfo: {
            query: '',
            // 当前页数
            pagenum: 1,
            pagesize: 2
         },
         userlist: [],
         total: 0,
         // 控制添加用户对话框的显示与隐藏
         addDialogVisible: false,
         // 添加用户的表单数据
         addForm: {
            username: '',
            password: '',
            email: '',
            mobile: ''
         },
         // 添加表单的验证规则对象
         addFormRules: {
            username: [
               { required: true, message: '请输入用户名', trigger: 'blur'},
               { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur'}
            ],
            password: [
               { required: true, message: '请输入密码', trigger: 'blur'},
               { min: 6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur'}
            ],
            email: [
               { required: true, message: '请输入邮箱', trigger: 'blur'},
               { validator: checkEmail, trigger: 'blur'}
            ],
            mobile: [
               { required: true, message: '请输入手机号', trigger: 'blur'},
               { validator: checkMobile, trigger: 'blur'}
            ],
         },
         // 控制修改用户对话框的显示与隐藏
         editDialogVisible: false,
         // 查询到的用户信息对象
         editForm: {},
         // 修改表单的验证规则对象
         editFormRules: {
            email: [
               { required: true, message: '请输入用户邮箱', trigger: 'blur'},
               { validator: checkEmail, trigger: 'blur'}
            ],
            mobile: [
               { required: true, message: '请输入用户手机号', trigger: 'blur'},
               { validator: checkMobile, trigger: 'blur'}
            ],
         },
         // 控制分配角色对话框的显示与隐藏
         setRoleDialogVisible: false,
         // 需要被分配角色的用户信息
         userInfo: {},
         // 所有角色的数据列表
         rolesList: [],
         // 已选中的角色id值
         selectedRoleId: ''
      }
   },
   created () {
      this.getUserList()
   },
   methods: {
      async getUserList () {
         const { data: res } = await this.$http.get('users', {
            params: this.queryInfo
         })
         if (res.meta.status !== 200) {
            return this.$message.error('获取用户列表失败！')
         }
         this.userlist = res.data.users
         this.total = res.data.total
         console.log(res)
      },
      // 监听 pagesize 改变的事件
      handleSizeChange (newSize) {
         this.queryInfo.pagesize = newSize
         this.getUserList()
      },
      // 监听 页码值 改变的事件
      handleCurrentChange (newPage) {
         this.queryInfo.pagenum = newPage
         this.getUserList()
      },
      // 监听 switch 开关状态的改变
      async userStateChanged(userinfo) {
         const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
         if (res.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败！')
         }
         this.$message.success('更新用户状态成功！')
      },
      // 监听添加用户对话框的关闭事件
      addDialogClosed () {
         this.$refs.addFormRef.resetFields()
      },
      // 点击按钮，添加新用户
      addUser () {
         this.$refs.addFormRef.validate(async valid => {
            if (!valid) return
            // 可以发起添加用户的网络请求
            const { data : res } = await this.$http.post('users', this.addForm)
            if (res.meta.status !== 201) {
               this.$message.error('添加用户失败！')
            }
            this.$message.success('添加用户成功！')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
         })
      },
      // 展示编辑用户的对话框
      async showEditDialog (id) {
         const { data : res } = await this.$http.get('users/' + id)
         if (res.meta.status !== 200) {
            return this.$message.error('查询用户信息失败！')
         }
         this.editForm = res.data
         this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed () {
         this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交
      editUserInfo () {
         this.$refs.editFormRef.validate(async valid => {
            if (!valid) return
            // 发起修改用户信息的请求
            const { data : res } = await this.$http.put('users/' + this.editForm.id, {
               email: this.editForm.email,
               mobile: this.editForm.mobile
            })
            if (res.meta.status !== 200){
               return this.$message.error('更新用户信息失败！')
            }
            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('更新用户信息成功！')
         })
      },
      // 根据id删除对应的用户信息
      async removeUserById (id) {
         // 弹框询问用户是否删除数据
         const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // 如果用户确认删除,则返回值为字符串 confirm
        // 如果用户取消了删除,则返回值为字符串 cancel
        // console.log(confirmResult)
        if (confirmResult !== 'confirm') {
           return this.$message.info('已取消删除')
        }
        const { data : res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
           return this.$message.error('删除用户失败！')
        }
        this.$message.success('删除用户成功！')
        this.getUserList()
      },
      // 展示分配角色的对话框
      async setRole(userInfo) {
         this.userInfo = userInfo
         // 在展示对话框之前，获取所有角色的列表
         const { data : res } = await this.$http.get('roles')
         if (res.meta.status !== 200) {
            return this.$message.error('获取角色列表失败！')
         }
         this.rolesList = res.data
         this.setRoleDialogVisible = true
      },
      // 点击按钮，分配角色
      async saveRoleInfo() {
         if (!this.selectedRoleId) {
            return this.$message.error('请选择要分配的角色！')
         }
         const { data : res } = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
         if(res.meta.status !== 200) {
            return this.$message.error('更新角色失败！')
         }
         this.$message.success('更新角色成功！')
         this.getUserList()
         this.setRoleDialogVisible = false
      },
      // 监听分配角色对话框的关闭事件
      setRoleDialogClosed() {
         this.selectedRoleId = ''
         this.userInfo = {}
      }
   }
}
</script>

<style lang="less" scoped>

</style>